Question

The current in the adjoining circuit will be

(a)  

(b)  

(c)  

(d)  

Answer

(c)  

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Similar questions

A silver and a copper voltmeters are connected in parallel across a 6 volt battery of negligible resistance. In half an hour, 1 gm of copper and 2 gm of silver are deposited. The rate at which energy is supplied by the battery will approximately be (Given E.C.E. of copper  = 3.294   and E.C.E. of silver  = 1.118

(a) 64 W

(b) 32 W

(c) 96 W

(d) 16 W

A circular coil of diameter 7cm has 24 turns of wire carrying current of 0.75A. The magnetic moment of the coil is

(a) 6.9  

(b) 2.3  

(c)  

(d)  

If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to

(a) CV     

(b)

(c)    

(d)  

Unit of conductance is __________.

The lowest frequency of light that will cause the emission of photoelectrons from the surface of a metal (for which work function is 1.65 eV) will be

(a) 4  

(b) 4  

(c) 4  

(d) 4 

The process of adding impurities to the pure semiconductor is called

(a) Drouping

(b) Drooping

(c) Doping

(d) None of these

Which of the following statements is correct?

The mechanism of the heat produced in a conductor when an electric current flows through it, can be explained on the basis of

(a) Viscosity

(b) Friction

(c) Free electron theory

(d) Gauss's theorem

In the following star circuit diagram (figure), the equivalent resistance between the points A and H will be

(a) 1.944 r

(b) 0.973 r

(c) 0.486 r

(d) 0.243 r

All of the following statements are correct except

(a) The magnification produced by a convex mirror is always less than one

(b) A virtual, erect, same-sized image can be obtained using a plane mirror

(c) A virtual, erect, magnified image can be formed using a concave mirror

(d) A real, inverted, same-sized image can be formed using a convex mirror